The Mitsubishi A6M Zero was a Japanese single-seat military fighter operated by the Imperial Japanese Navy from carriers and land bases. Designed by Mitsubishi and also built by Nakajima, it served from the opening campaigns in China through the final defence of Japan. The Allies assigned it the reporting name Zeke.[1]Mitsubishi A6M5 Reisen Model 52National Air and Space Museum · airandspace.si.edu · Accessed 2026-09-13Open source details[2]A6M2 ZeroNational Naval Aviation Museum · history.navy.mil · Accessed 2026-09-13Open source details
Lightweight naval fighter
Jirō Horikoshi's team answered a 1937 naval requirement with an all-metal low-wing monoplane. Flight trials in 1939 demonstrated the design's performance. Low weight contributed to its range, climb and manoeuvrability, allowing the aircraft to perform demanding long-distance naval missions.[2]A6M2 ZeroNational Naval Aviation Museum · history.navy.mil · Accessed 2026-09-13Open source details
Early Zeros lacked armour and self-sealing fuel tanks. These omissions helped preserve performance but left the aircraft vulnerable to gunfire. The A6M2 combined a Nakajima Sakae radial engine with machine guns and 20 mm cannon.[2]A6M2 ZeroNational Naval Aviation Museum · history.navy.mil · Accessed 2026-09-13Open source details
From China to the Pacific war
Combat began in China in 1940. Zeros subsequently accompanied Japanese attacks at Pearl Harbor and fought in the great carrier battles of 1942. Their early effectiveness surprised many Allied aviators, while the heavy loss of experienced Japanese pilots and carrier resources became increasingly difficult to replace.[1]Mitsubishi A6M5 Reisen Model 52National Air and Space Museum · airandspace.si.edu · Accessed 2026-09-13Open source details
American pilots developed tactics to exploit their own aircraft's strengths and avoid prolonged turning contests. As more capable Allied fighters entered service, the Zero's disadvantages became more pronounced, though its low-speed manoeuvrability remained important.[2]A6M2 ZeroNational Naval Aviation Museum · history.navy.mil · Accessed 2026-09-13Open source details
Production and evaluation
More than ten thousand Zeros were manufactured across the family. Later A6M5 aircraft continued the design's development. Captured examples underwent Allied performance trials, providing direct evidence of their capabilities. The Smithsonian's Model 52 was evaluated in the United States during 1944–1945, and its surviving records trace the aircraft through several American test establishments.[1]Mitsubishi A6M5 Reisen Model 52National Air and Space Museum · airandspace.si.edu · Accessed 2026-09-13Open source details